WO2010133202A1 - Sound-absorbing heat shield - Google Patents

Sound-absorbing heat shield Download PDF

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Publication number
WO2010133202A1
WO2010133202A1 PCT/DE2010/000527 DE2010000527W WO2010133202A1 WO 2010133202 A1 WO2010133202 A1 WO 2010133202A1 DE 2010000527 W DE2010000527 W DE 2010000527W WO 2010133202 A1 WO2010133202 A1 WO 2010133202A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat shield
sound
damping layer
absorbing heat
shield according
Prior art date
Application number
PCT/DE2010/000527
Other languages
German (de)
French (fr)
Inventor
Martin Klautke
Original Assignee
Lydall Gerhardi Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Lydall Gerhardi Gmbh & Co. Kg filed Critical Lydall Gerhardi Gmbh & Co. Kg
Priority to EP20100732262 priority Critical patent/EP2429863B1/en
Priority to US13/320,365 priority patent/US20120064334A1/en
Priority to ES10732262T priority patent/ES2399042T3/en
Priority to PL10732262T priority patent/PL2429863T3/en
Publication of WO2010133202A1 publication Critical patent/WO2010133202A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0876—Insulating elements, e.g. for sound insulation for mounting around heat sources, e.g. exhaust pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31692—Next to addition polymer from unsaturated monomers

Definitions

  • the invention relates to a sound-absorbing heat shield according to claim 1.
  • the invention further relates to a method for producing a sound-absorbing heat shield according to claim 10.
  • Such heat shields are used in particular in the automotive industry, for example, to clad the interior of the tunnel in the bottom part of a vehicle.
  • Such cladding is of great importance, since on the one hand the usual use of catalysts, the temperature of the exhaust gases and thus the temperature of the exhaust pipes is greatly increased and on the other hand, the limits for the noise level of a vehicle are increasingly lower.
  • multilayer absorbers are formed of several successively arranged films, between which narrow air gaps are arranged. These absorbers have due to their small thickness, only a small sound-absorbing effect.
  • the so-called “tuned resonant absorber” consist essentially of a perforated carrier sheet, behind which a layer consisting of porous medium, is arranged. Between the carrier plate and the porous medium, an air gap is arranged.
  • the invention aims to remedy this situation.
  • the invention is based on the object to provide a sound-absorbing heat shield that has a high internal damping and are avoided in the vibration cracks.
  • a sound-absorbing heat shield is created that has a high internal damping and are avoided in the vibration cracks.
  • a composite film which is formed from two metal foils, which are connected to each other areally via a damping layer, a good damping effect is achieved.
  • the present composite foil can be deformed directly into the shape of the heat shield.
  • the metal foils of the composite foil are preferably aluminum foils. This material has proven itself in the production of heat shields.
  • the damping layer of the composite film is designed as a pressure-sensitive adhesive. As a result, a homogeneous damping layer is achieved over the surface of the composite film.
  • the damping layer has a thickness of 10 .mu.m to 150 .mu.m.
  • the thickness of a metal layer is between 100 ⁇ m and 700 ⁇ m. In these areas, good results have been achieved in terms of workability of the composite film and the heat and sound absorbing effect of the heat shield made of the composite film.
  • the invention further provides a method for producing a sound-absorbing heat shield having the features of claim 10.
  • the connection of two metal foils and a damping layer arranged between them to form a composite foil simplifies the subsequent shaping of the heat shield.
  • the heat shield chosen as an exemplary embodiment consists essentially of a composite foil, which is formed from two metal foils, between which a damping layer is introduced.
  • the metal foils have a thickness of 0.3 mm, the thickness of the damping layer is 0.1 mm. This results in a total film thickness of 0.7 mm.
  • the two metal layers can also be formed in the same thickness, whereby a symmetrical structure is effected.
  • the damping layer is formed in the embodiment as a polyethylene-Polypropolen- acrylic-silicate layer.
  • This layer forms a pressure-sensitive adhesive, which is brought in the course of the production of the composite film in a hot state between the aluminum foils. Subsequently, the three layers are subjected to surface pressure, whereby the composite of the layers is made.
  • the composite film thus formed can be used in temperature ranges up to 400 degrees Celsius.
  • the production of the heat shield is done by deformation of this composite film in the desired design.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a sound-absorbing heat shield comprising at least three layers which are connected to one another. The heat shield is produced from a composite foil which comprises two metal foils which are connected to one another areally by means of a damping layer. The invention also relates to a method for producing a sound-absorbing heat shield.

Description

Schallabsorbierendes Hitzeschild Sound absorbing heat shield
Die Erfindung betrifft ein schallabsorbierendes Hitzeschild nach dem Patentanspruch 1. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung eines schallabsorbierenden Hitzeschildes nach dem Patentanspruch 10.The invention relates to a sound-absorbing heat shield according to claim 1. The invention further relates to a method for producing a sound-absorbing heat shield according to claim 10.
Derartige Hitzeschilde finden insbesondere in der Automobilindustrie Verwendung, um beispielsweise das Tunnelinnere im Bodenteil eines Fahrzeugs zu verkleiden. Solchen Verkleidungen kommt eine große Bedeutung zu, da einerseits bei der üb- liehen Verwendung von Katalysatoren die Temperatur der Abgase und damit auch die Temperatur der Auspuffrohre stark erhöht ist und andererseits die Grenzwerte für den Geräuschpegel eines Fahrzeugs zunehmend tiefer anzusetzen sind.Such heat shields are used in particular in the automotive industry, for example, to clad the interior of the tunnel in the bottom part of a vehicle. Such cladding is of great importance, since on the one hand the usual use of catalysts, the temperature of the exhaust gases and thus the temperature of the exhaust pipes is greatly increased and on the other hand, the limits for the noise level of a vehicle are increasingly lower.
Derzeit bekannte schallabsorbierende Hitzeschilde lassen sich in zwei Kategorien einteilen: „Multilayerabsorber" sind aus mehreren hintereinander angeordneten Folien gebildet, zwischen denen schmale Luftspalte angeordnet sind. Diese Absorber haben auf Grund ihrer geringen Dicke nur eine geringe schallabsorbierende Wirkung. Die sogenannten „Tuned Resonant Absorber" bestehen im Wesentlichen aus einem perforierten Trägerblech, hinter dem eine Schicht, bestehend aus porö- sem Medium, angeordnet ist. Zwischen dem Trägerblech und dem porösen Medium ist ein Luftspalt angeordnet.Currently known sound-absorbing heat shields can be divided into two categories: "multilayer absorbers" are formed of several successively arranged films, between which narrow air gaps are arranged.These absorbers have due to their small thickness, only a small sound-absorbing effect.The so-called "tuned resonant absorber" consist essentially of a perforated carrier sheet, behind which a layer consisting of porous medium, is arranged. Between the carrier plate and the porous medium, an air gap is arranged.
Eine Problematik bei den vorbekannten Hitzeschilden ist, dass diese oftmals in Eigenschwingung versetzt werden, wodurch diese selbst zur Schallquelle werden. Zudem besteht hier die Gefahr von Schwingungsrissen.A problem with the known heat shields is that they are often put into self-oscillation, whereby they themselves become the sound source. In addition, there is the danger of vibration cracks here.
Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zu Grunde, ein schallabsorbierendes Hitzeschild zu schaffen, dass eine hohe Eigendämpfung aufweist und bei dem Schwingungsrisse vermieden sind. Gemäß der Erfin- düng wird diese Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst. Mit der Erfindung ist ein schallabsorbierendes Hitzeschild geschaffen, dass eine hohe Eigendämpfung aufweist und bei dem Schwingungsrisse vermieden sind. Durch die Verwendung einer Verbundfolie, welche aus zwei Metallfolien gebildet ist, die flächig über eine Dämpfungsschicht miteinander verbunden sind, ist eine gute Dämpfungswirkung erzielt. Die vorliegende Verbundfolie kann direkt in die Gestalt des Hitzeschildes verformt werden.The invention aims to remedy this situation. The invention is based on the object to provide a sound-absorbing heat shield that has a high internal damping and are avoided in the vibration cracks. According to the invention düng this object is achieved by the features of claim 1. With the invention, a sound-absorbing heat shield is created that has a high internal damping and are avoided in the vibration cracks. By using a composite film, which is formed from two metal foils, which are connected to each other areally via a damping layer, a good damping effect is achieved. The present composite foil can be deformed directly into the shape of the heat shield.
Bevorzugt sind die Metallfolien der Verbundfolie Aluminiumfolien. Dieser Werkstoff hat sich bei der Herstellung von Hitzeschilden bewährt.The metal foils of the composite foil are preferably aluminum foils. This material has proven itself in the production of heat shields.
In weiterer Ausgestaltung der Erfindung ist die Dämpfungsschicht der Verbundfolie als druckempfindlicher Kleber ausgebildet. Hierdurch ist eine homogene Dampfungsschicht über die Fläche der Verbundfolie erzielt.In a further embodiment of the invention, the damping layer of the composite film is designed as a pressure-sensitive adhesive. As a result, a homogeneous damping layer is achieved over the surface of the composite film.
Bevorzugt weist die Dämpfungsschicht eine Dicke von 10 μm bis 150 μm auf. Vorteilhaft beträgt die Dicke einer Metallschicht zwischen 100 μm und 700 μm. In diesen Bereichen wurden gute Ergebnisse hinsichtlich Bearbeitbarkeit der Verbundfolie sowie der hitze- und schallabsorbierenden Wirkung des aus der Verbundfolie hergestellten Hitzeschildes erzielt.Preferably, the damping layer has a thickness of 10 .mu.m to 150 .mu.m. Advantageously, the thickness of a metal layer is between 100 μm and 700 μm. In these areas, good results have been achieved in terms of workability of the composite film and the heat and sound absorbing effect of the heat shield made of the composite film.
Gegenstand der Erfindung ist weiterhin ein Verfahren zur Herstellung eines schallabsorbierenden Hitzeschildes mit den Merkmalen des Patentanspruchs 10. Durch die Verbindung von zwei Metallfolien und einer zwischen diesen angeordneten Dämpfungsschicht zu einer Verbundfolie ist die nachfolgende Ausformung des Hit- zeschildes vereinfacht.The invention further provides a method for producing a sound-absorbing heat shield having the features of claim 10. The connection of two metal foils and a damping layer arranged between them to form a composite foil simplifies the subsequent shaping of the heat shield.
Nicht zuletzt ist auch die Verwendung einer Verbundfolie zur Herstellung eines schallabsorbierenden Hitzeschildes nach dem Patentanspruch 11 Gegenstand der vorliegenden Erfindung.Last but not least, the use of a composite film for producing a sound-absorbing heat shield according to claim 11 is the subject of the present invention.
Andere Weiterbildungen und Ausgestaltungen der Erfindung sind in den übrigen Unteransprüchen angegeben. Das als Ausführungsbeispiel gewählte Hitzeschild besteht im Wesentlichen aus einer Verbundfolie, welche aus zwei Metallfolien gebildet ist, zwischen die eine Dämpfschicht eingebracht ist. Im Ausführungsbeispiel weisen die Metallfolien eine Dicke von 0,3 mm auf, die Dicke der Dämpfungsschicht beträgt 0,1 mm. Hierdurch ergibt sich eine Gesamtfoliendicke von 0,7 mm. Die beiden Metallschichten können auch in gleicher Dicke ausgebildet sein, wodurch ein symmetrischer Aufbau bewirkt ist.Other developments and refinements of the invention are specified in the remaining subclaims. The heat shield chosen as an exemplary embodiment consists essentially of a composite foil, which is formed from two metal foils, between which a damping layer is introduced. In the exemplary embodiment, the metal foils have a thickness of 0.3 mm, the thickness of the damping layer is 0.1 mm. This results in a total film thickness of 0.7 mm. The two metal layers can also be formed in the same thickness, whereby a symmetrical structure is effected.
Die Dämpfungsschicht ist im Ausführungsbeispiel als Polyethylen-Polypropolen- Acryl-Silikat-Schicht ausgebildet. Diese Schicht bildet einen druckempfindlichen Kleber aus, der im Zuge der Herstellung der Verbundfolie in heißem Zustand zwischen die Aluminiumfolien verbracht wird. Anschließend werden die drei Schichten flächig mit Druck beaufschlagt, wodurch der Verbund der Schichten hergestellt ist. Die so gebildete Verbundfolie ist in Temperaturbereichen bis 400 Grad Celsius einsetzbar. Die Herstellung des Hitzeschildes erfolgt durch Verformung dieser Verbundfolie in die gewünschte Gestaltung.The damping layer is formed in the embodiment as a polyethylene-Polypropolen- acrylic-silicate layer. This layer forms a pressure-sensitive adhesive, which is brought in the course of the production of the composite film in a hot state between the aluminum foils. Subsequently, the three layers are subjected to surface pressure, whereby the composite of the layers is made. The composite film thus formed can be used in temperature ranges up to 400 degrees Celsius. The production of the heat shield is done by deformation of this composite film in the desired design.
Durch die Verwendung der beschriebenen Verbundfolie für die Herstellung von Hitzeschilden können Resonanzschwingungen deutlich vermindert und Schwingungsrisse vermieden werden. Gleichzeitig ist die Herstellung der Hitzeschilde in der Massenherstellung deutlich erleichtert. By using the described composite film for the production of heat shields resonant vibrations can be significantly reduced and vibration cracks are avoided. At the same time, the production of heat shields in mass production is much easier.

Claims

Patentansprüche claims
1. Schallabsorbierendes Hitzeschild, umfassend wenigstens drei Schichten, welche miteinander verbunden sind, dadurch gekennzeichnet, dass das Hitzeschild aus einer Verbundfolie hergestellt ist, welche zwei Metallfolien umfasst, die flächig über eine Dämpfungsschicht miteinander verbunden sind.A sound absorbing heat shield, comprising at least three layers, which are interconnected, characterized in that the heat shield is made of a composite film comprising two metal foils, which are connected to each other areally via a damping layer.
2. Hitzeschild nach Anspruch 1 , dadurch gekennzeichnet, dass die Metallfolien Aluminiumfolien sind.2. Heat shield according to claim 1, characterized in that the metal foils are aluminum foils.
3. Hitzeschild nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die3. Heat shield according to claim 1 or 2, characterized in that the
Dämpfungsschicht als druckempfindlicher Kleber ausgebildet ist.Damping layer is designed as a pressure-sensitive adhesive.
4. Hitzeschild nach Anspruch 3, dadurch gekennzeichnet, dass die Dämpfungsschicht eine Polyethylen-basierende Schicht ist.4. Heat shield according to claim 3, characterized in that the damping layer is a polyethylene-based layer.
5. Hitzeschild nach Anspruch 4, dadurch gekennzeichnet, dass in die Dämp- fungsschicht Polypropylen enthält5. Heat shield according to claim 4, characterized in that in the damping layer contains polypropylene
6. Hitzeschild nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass in die Dämpfungsschicht ein Silikat enthält.6. Heat shield according to claim 4 or 5, characterized in that in the damping layer contains a silicate.
7. Hitzeschild nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Dämpfungsschicht ein Acryl enthält.7. Heat shield according to one of claims 4 to 6, characterized in that the damping layer contains an acrylic.
8. Hitzeschild nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die Dämpfungsschicht eine Dicke von 10 μm - 150 μm aufweist.8. Heat shield according to one of the preceding claims, characterized in that the damping layer has a thickness of 10 microns - 150 microns.
9. Hitzeschild nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die Dicke einer Metallschicht zwischen 100 μm und 700 μm beträgt.9. Heat shield according to one of the preceding claims, characterized in that the thickness of a metal layer is between 100 microns and 700 microns.
10. Verfahren zur Herstellung eines schallabsorbierenden Hitzeschildes, bei dem eine Verbundfolie nach einem der Ansprüche 1 bis 9 hergestellt wird, wobei die Dämmschicht in heißem Zustand zwischen die beiden Metallfolien eingebracht wird und anschließend die drei Schichten flächig mit Druck beaufschlagt werden, und nachfolgend die Folie in die gewünschte Gestalt des Hitzeschildes verformt wird.10. A method for producing a sound-absorbing heat shield, in which a composite film is produced according to one of claims 1 to 9, wherein the insulating layer is introduced in a hot state between the two metal foils and then the three layers are subjected to pressure surface, and then the film is deformed into the desired shape of the heat shield.
11. Verwendung einer Verbundfolie nach einem der Ansprüche 1 bis 9 für die Herstellung eines schallabsorbierenden Hitzeschildes. 11. Use of a composite film according to one of claims 1 to 9 for the production of a sound-absorbing heat shield.
PCT/DE2010/000527 2009-05-16 2010-05-14 Sound-absorbing heat shield WO2010133202A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20100732262 EP2429863B1 (en) 2009-05-16 2010-05-14 Sound-absorbing heat shield
US13/320,365 US20120064334A1 (en) 2009-05-16 2010-05-14 Sound-absorbing heat shield
ES10732262T ES2399042T3 (en) 2009-05-16 2010-05-14 Sound absorbing term shield
PL10732262T PL2429863T3 (en) 2009-05-16 2010-05-14 Sound-absorbing heat shield

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009021621.9 2009-05-16
DE200910021621 DE102009021621A1 (en) 2009-05-16 2009-05-16 Sound absorbing heat shield

Publications (1)

Publication Number Publication Date
WO2010133202A1 true WO2010133202A1 (en) 2010-11-25

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ID=42740291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2010/000527 WO2010133202A1 (en) 2009-05-16 2010-05-14 Sound-absorbing heat shield

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Country Link
US (1) US20120064334A1 (en)
EP (1) EP2429863B1 (en)
DE (1) DE102009021621A1 (en)
ES (1) ES2399042T3 (en)
PL (1) PL2429863T3 (en)
WO (1) WO2010133202A1 (en)

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Publication number Priority date Publication date Assignee Title
PL2502788T3 (en) * 2011-03-23 2014-08-29 Autoneum Man Ag Production process for a moulded multilayer lining

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EP0486427A1 (en) * 1990-11-12 1992-05-20 Rieter Automotive (International) Ag Heat shield adapted for recycling
DE19825762A1 (en) * 1997-06-09 1998-12-10 Atd Corp Shaped multilayer metal foil shielding structures and process for their manufacture
DE19821532A1 (en) * 1998-05-14 1999-11-25 Hp Chemie Pelzer Res & Dev Lower cost, heat and noise absorbing shroud, manufacturing method and use of shroud in an engine vehicle compartment
WO2005061280A1 (en) 2003-12-12 2005-07-07 Carcoustics Tech Center Gmbh Sound-absorbing heat shield
DE102008030709A1 (en) * 2008-06-27 2009-12-31 Elringklinger Ag Multilayered shielding component i.e. sound-absorbing heat shield, for high-temperature region of vehicle, has function unit whose edge is defined at component, such that membrane engages in direction of function layer in rotational space

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EP1679172A1 (en) * 2005-01-11 2006-07-12 Trelleborg Rubore Aktiebolag A moulded plastic article having vibration damping properties and a method for preparation thereof
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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0486427A1 (en) * 1990-11-12 1992-05-20 Rieter Automotive (International) Ag Heat shield adapted for recycling
DE19825762A1 (en) * 1997-06-09 1998-12-10 Atd Corp Shaped multilayer metal foil shielding structures and process for their manufacture
DE19821532A1 (en) * 1998-05-14 1999-11-25 Hp Chemie Pelzer Res & Dev Lower cost, heat and noise absorbing shroud, manufacturing method and use of shroud in an engine vehicle compartment
WO2005061280A1 (en) 2003-12-12 2005-07-07 Carcoustics Tech Center Gmbh Sound-absorbing heat shield
DE102008030709A1 (en) * 2008-06-27 2009-12-31 Elringklinger Ag Multilayered shielding component i.e. sound-absorbing heat shield, for high-temperature region of vehicle, has function unit whose edge is defined at component, such that membrane engages in direction of function layer in rotational space

Also Published As

Publication number Publication date
PL2429863T3 (en) 2013-04-30
US20120064334A1 (en) 2012-03-15
ES2399042T3 (en) 2013-03-25
DE102009021621A1 (en) 2010-11-18
EP2429863A1 (en) 2012-03-21
EP2429863B1 (en) 2012-12-19

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